277 lines
7.5 KiB
C
277 lines
7.5 KiB
C
/*
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From: faith@cs.unc.edu (Rik Faith)
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Subject: User mode keyboard rate changer
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Date: 27 Apr 92 13:44:26 GMT
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I put together this program, called kbdrate.c, which will reset the keyboard
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repeat rate and delay in user mode. The program must have read/write
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access to /dev/port, so if /dev/port is only read/writeable by group port,
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then kbdrate must run setgid to group port (for example).
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The "rate" is the rate in characters per second
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The "delay" is the amount of time the key must remain depressed before it
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will start to repeat.
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Usage examples:
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kbdrate set rate to IBM default (10.9 cps, 250ms delay)
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kbdrate -r 30.0 set rate to 30 cps and delay to 250ms
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kbdrate -r 20.0 -s set rate to 20 cps (delay 250ms) -- don't print message
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kbdrate -r 0 -d 0 set rate to 2.0 cps and delay to 250 ms
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I find it useful to put kbdrate in my /etc/rc file so that the keyboard
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rate is set to something that I find comfortable at boot time. This sure
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beats rebuilding the kernel!
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kbdrate.c -- Set keyboard typematic rate (and delay)
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Created: Thu Apr 23 12:24:30 1992
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Author: Rickard E. Faith, faith@cs.unc.edu
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Copyright 1992 Rickard E. Faith. Distributed under the GPL.
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This program comes with ABSOLUTELY NO WARRANTY.
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Usage: kbdrate [-r rate] [-d delay] [-s]
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Rate can range from 2.0 to 30.0 (units are characters per second)
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Delay can range from 250 to 1000 (units are milliseconds)
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-s suppressed message
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Compiles under gcc 2.1 for Linux (tested with the pre-0.96 kernel)
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Wed Jun 22 21:35:43 1994, faith@cs.unc.edu:
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Changed valid_rates per suggestion by Andries.Brouwer@cwi.nl.
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Wed Jun 22 22:18:29 1994, faith@cs.unc.edu:
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Added patch for AUSTIN notebooks from John Bowman
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(bowman@hagar.ph.utexas.edu)
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Linux/68k modifications by Roman Hodek
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(Roman.Hodek@informatik.uni-erlangen.de):
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Reading/writing the Intel I/O ports via /dev/port is not the
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English way... Such hardware dependant stuff can never work on
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other architectures.
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Linux/68k has an new ioctl for setting the keyboard repeat rate
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and delay. Both values are counted in msecs, the kernel will do
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any rounding to values possible with the underlying hardware.
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kbdrate now first tries if the KDKBDREP ioctl is available. If it
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is, it is used, else the old method is applied.
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1999-02-22 Arkadiusz Mi<4D>kiewicz <misiek@misiek.eu.org>
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- added Native Language Support
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1999-03-17
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Linux/SPARC modifications by Jeffrey Connell <ankh@canuck.gen.nz>:
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It seems that the KDKBDREP ioctl is not available on this platform.
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However, Linux/SPARC has its own ioctl for this, with yet another
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different measurement system. Thus, try for KIOCSRATE, too.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include "../defines.h"
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#ifdef HAVE_kd_h
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#include <linux/kd.h>
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#endif
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#ifdef __sparc__
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#include <asm/param.h>
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#include <asm/kbio.h>
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#endif
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#include "nls.h"
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#include "../version.h"
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static int valid_rates[] = { 300, 267, 240, 218, 200, 185, 171, 160, 150,
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133, 120, 109, 100, 92, 86, 80, 75, 67,
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60, 55, 50, 46, 43, 40, 37, 33, 30, 27,
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25, 23, 21, 20 };
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#define RATE_COUNT (sizeof( valid_rates ) / sizeof( int ))
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static int valid_delays[] = { 250, 500, 750, 1000 };
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#define DELAY_COUNT (sizeof( valid_delays ) / sizeof( int ))
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int
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KDKBDREP_ioctl_ok(double rate, int delay, int silent) {
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#ifdef KDKBDREP
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/* This ioctl is defined in <linux/kd.h> but is not
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implemented anywhere - must be in some m68k patches. */
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struct kbd_repeat kbdrep_s;
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/* don't change, just test */
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kbdrep_s.rate = -1;
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kbdrep_s.delay = -1;
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if (ioctl( 0, KDKBDREP, &kbdrep_s )) {
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if (errno == EINVAL)
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return 0;
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perror( "ioctl(KDKBDREP)" );
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exit( 1 );
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}
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/* do the change */
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if (rate == 0) /* switch repeat off */
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kbdrep_s.rate = 0;
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else
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kbdrep_s.rate = 1000.0 / rate; /* convert cps to msec */
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if (kbdrep_s.rate < 1)
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kbdrep_s.rate = 1;
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kbdrep_s.delay = delay;
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if (kbdrep_s.delay < 1)
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kbdrep_s.delay = 1;
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if (ioctl( 0, KDKBDREP, &kbdrep_s )) {
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perror( "ioctl(KDKBDREP)" );
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exit( 1 );
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}
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/* report */
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if (kbdrep_s.rate == 0)
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rate = 0;
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else
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rate = 1000.0 / (double) kbdrep_s.rate;
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if (!silent)
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printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
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rate, kbdrep_s.delay );
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return 1; /* success! */
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#else /* no KDKBDREP */
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return 0;
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#endif /* KDKBDREP */
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}
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int
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KIOCSRATE_ioctl_ok(double rate, int delay, int silent) {
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#ifdef KIOCSRATE
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struct kbd_rate kbdrate_s;
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int fd;
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fd = open("/dev/kbd", O_RDONLY);
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if (fd == -1) {
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perror( "open(/dev/kbd)" );
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exit( 1 );
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}
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kbdrate_s.rate = (int) (rate + 0.5); /* must be integer, so round up */
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kbdrate_s.delay = delay * HZ / 1000; /* convert ms to Hz */
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if (kbdrate_s.rate > 50)
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kbdrate_s.rate = 50;
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if (ioctl( fd, KIOCSRATE, &kbdrate_s )) {
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perror( "ioctl(KIOCSRATE)" );
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exit( 1 );
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}
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close( fd );
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if (!silent)
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printf( "Typematic Rate set to %d cps (delay = %d ms)\n",
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kbdrate_s.rate, kbdrate_s.delay * 1000 / HZ );
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return 1;
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#else /* no KIOCSRATE */
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return 0;
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#endif /* KIOCSRATE */
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}
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int main( int argc, char **argv )
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{
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#ifdef __sparc__
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double rate = 5.0; /* Default rate */
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int delay = 200; /* Default delay */
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#else
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double rate = 10.9; /* Default rate */
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int delay = 250; /* Default delay */
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#endif
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int value = 0x7f; /* Maximum delay with slowest rate */
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/* DO NOT CHANGE this value */
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int silent = 0;
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int fd;
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char data;
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int c;
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int i;
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extern char *optarg;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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while ( (c = getopt( argc, argv, "r:d:sv" )) != EOF ) {
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switch (c) {
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case 'r':
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rate = atof( optarg );
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break;
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case 'd':
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delay = atoi( optarg );
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break;
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case 's':
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silent = 1;
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break;
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case 'v':
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fprintf( stderr, "util-linux %s kbdrate\n", UTIL_LINUX_VERSION);
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exit(0);
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}
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}
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if(KDKBDREP_ioctl_ok(rate, delay, silent)) /* m68k? */
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return 0;
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if(KIOCSRATE_ioctl_ok(rate, delay, silent)) /* sparc? */
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return 0;
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/* The ioport way */
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for (i = 0; i < RATE_COUNT; i++)
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if (rate * 10 >= valid_rates[i]) {
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value &= 0x60;
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value |= i;
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break;
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}
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for (i = 0; i < DELAY_COUNT; i++)
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if (delay <= valid_delays[i]) {
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value &= 0x1f;
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value |= i << 5;
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break;
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}
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if ( (fd = open( "/dev/port", O_RDWR )) < 0) {
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perror( _("Cannot open /dev/port") );
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exit( 1 );
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}
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do {
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lseek( fd, 0x64, 0 );
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read( fd, &data, 1 );
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} while ((data & 2) == 2 ); /* wait */
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lseek( fd, 0x60, 0 );
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data = 0xf3; /* set typematic rate */
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write( fd, &data, 1 );
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do {
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lseek( fd, 0x64, 0 );
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read( fd, &data, 1 );
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} while ((data & 2) == 2 ); /* wait */
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lseek( fd, 0x60, 0 );
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sleep( 1 );
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write( fd, &value, 1 );
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close( fd );
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if (!silent) printf( _("Typematic Rate set to %.1f cps (delay = %d ms)\n"),
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valid_rates[value & 0x1f] / 10.0,
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valid_delays[ (value & 0x60) >> 5 ] );
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return 0;
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}
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